
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1992-1994
1989
1994
1994
1991-2000
1995
1999
1991-2000
1996
1999
1990
1999
1999
1995
1997
1998
1999
1990s
1990-1991
1997
1996-1998
2000
1996
1996
1996
1996
1996
1996
1996
1996
1988-1993
1992-1999
2000-100
2000-100 BCE
1988
1990-1995
1993
1997
1994
1993-2000
1997
2000
1997
1990
1990
1990
2000
1999
circa 2000